Can I install Wondermat in a room with a heated sub-floor?
This actually gets asked quite a bit, and at first we wondered why anyone would want to put an insulating layer of foam on top of an expensive heated sub-floor system. Obviously the people asking this have some safety issue they are trying to address, so here are the issues you need to be aware of: 1. Because the mat is a foamed plastic, it will respond to temperature changes by expanding and contracting. The temperature of the sub-floor should not exceed 85 degrees, to avoid excessive expansion. 2. The mat is going to block the floors’ heat in the areas it’s installed in and reduce the efficiency of your heating system. Bearing these facts in mind, our recommendations are to limit your use of Wondermat in areas with heated sub-floors unless you are willing to accept the loss of heating efficiency. The best rule of thumb is to stay as small as possible. We absolutely do not suggest attempting a wall-to-wall type installation because of expansion problems, and even if you are doing a la
